US2802866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the production of oil-soluble sulfonates from polyalkylated aromatic residues
Assignee: L SONNEBORN SONS Inc
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Filing: 1955-01-11
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Granted: 1957-08-13
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Expires: 1975-01-11
Abstract
No abstract record available.
Inventors
- 👤 Salzmann Leo
- 👤 George A Kessler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:26
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/57; C07C309/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
IN THE PRODUCTION OF OIL-SOLUBLE SULFONATES FROM DODECYLBENZENE STILL BOTTOMS HAVING AN AVERAGE MOLECULAR WEIGHT ABOVE 300, THE IMPROVEMENT WHICH COMPRISES BLENDING SAID STILL BOTTOMS WITH A PETROLEUM LUBRICATING OIL FRACTION HAVING A SAYBOLT VISCOSITY AT 100*F. OF FROM 30-700 SECONDS, THEREBY PRODUCING A BLEND, THEREAFTER SULFONATING THE BLEND, THEREBY PRODUCING SULFONIC ACIDS, NEUTRALIZING THE SAID SULFONIC ACIDS, THEREBY PRODUCING SULFONATES, AND RECOVERING THE SULFONATES SO PRODUCED.
Claim 2
Dependent Claim
67 words
IN THE PRODUCTION OF OIL-SOLUBLE SULFONATES FROM DODECYLBENZENE STILL BOTTOMS HAVING AN AVERAGE MOLECULAR WEIGHT ABOVE 300, THE IMPROVEMENT WHICH COMPRISES BLENDING SAID STILL BOTTOMS WITH A PETROLEUM LUBRICATING OIL FRACTION HAVING A SAYBOLT VISCOSITY AT 100*F. OF FROM 30-700 SECONDS, THEREBY PRODUCING A BLEND, THEREAFTER SULFONATING THE BLEND, THEREBY PRODUCING SULFONIC ACIDS, NEUTRALIZING THE SAID SULFONIC ACIDS, THEREBY PRODUCING SULFONATES, AND RECOVERING THE SULFONATES SO PRODUCED.
References Cited (Backward Citations)
US2285390A
Cited
US2573675A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-12 | 1961-02-11 | 1961-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-12 | 1965-02-11 | 1965-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-12 | 1969-02-11 | 1969-08-13 | $7700.00 | Window Closed / Lapsed |